Depends on what you watch. The two that I originally put there pretty much took care of the majority of all the repos. Fusion contained most of the repos that anyone needed to really watch movies and TV, Exodus and Phoenix. Exodus itself will pretty much get you anything, but Phoenix has a lot of sports stuff and old movies where Exodus does not.

Since then, I found SALTS and it was not on XFinity or Fusion.

As far as the cube thing, it's a pretty expensive "cool" device. My brother uses some box deal called JetStreamBox and I actually prefer the simpler firestick. Its cheap and gets the job done.